arm64: dts: qcom: sm8650: change labels to lower-case

DTS coding style expects labels to be lowercase.  No functional impact.
Verified with comparing decompiled DTB (dtx_diff and fdtdump+diff).

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241022-dts-qcom-label-v3-14-0505bc7d2c56@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>